diff --git a/Seaweed-Message-Queue.md b/Seaweed-Message-Queue.md
index b207f09..62d794d 100644
--- a/Seaweed-Message-Queue.md
+++ b/Seaweed-Message-Queue.md
@@ -18,6 +18,11 @@ The Agent can be run either on the server side, or as a sidecar on each client.
 * Messages stored in SeaweedFS can be converted into Parquet files, saving disk space with more efficient columnar compression. 
 * The messages in Parquet files can be streamed via Seaweed messaging brokers.
 * The Parquet files can be read in batches directly from SeaweedFS.
-* Messages published successfully are acknowledged, while unsuccessful ones receive an error.
+
+## Features on Publishing
+* Messages published successfully are acknowledged asynchronously.
+
+## Features on Subscribing
 * Message consume offsets are tracked and persisted.
 * Consumer APIs can process messages in multiple threads while still ensuring serial processing of messages with the same key.
+